title: fragment/mediawiki/common
description: Common schema fields for all Mediawiki entities
$id: /fragment/mediawiki/common/3.0.0
$schema: https://json-schema.org/draft-07/schema#
type: object
# Use allOf so that common schemas are fully merged by
# jsonschema-tools along with their required fields.
allOf:
    ### global event fields
  - $ref: /fragment/common/2.0.0#
### Mediawiki entity fields.
properties:
  database:
    description: The name of the wiki database this event entity belongs to.
    type: string
    minLength: 1

  performer:
    description: Represents the user that performed this change.
    type: object
    properties:
      user_id:
        description: >
          The user id that performed this change.  This is optional, and
          will not be present for anonymous users.
        type: integer
      user_text:
        description: The text representation of the user that performed this change.
        type: string
        minLength: 1
      user_groups:
        description: A list of the groups this user belongs to.  E.g. bot, sysop etc.
        type: array
        items:
          type: string
          minLength: 1
      user_is_bot:
        description: >
          True if this user is considered to be a bot at the time of this event.
          This is checked via the $user->isBot() method, which considers both
          user_groups and user permissions.
        type: boolean
      user_registration_dt:
        description: >
          The datetime of the user account registration.
          Not present for anonymous users or if missing in the MW database.
        type: string
        format: date-time
        maxLength: 128
      user_edit_count:
        description: >
          The number of edits this user has made at the time of this event.
          Not present for anonymous users.
        type: integer
        minimum: 0